DESC: Features the EnviroSense system that automatically monitors air quality with built-in smart sensors for dust and odor levels. The 5-stage air cleaning system includes a washable pre-filter, true HEPA filter with 99.99% efficiency, nano-silver filter, washable carbon filter and the PlasmaDoctor ion generator that releases positive and negative ions, creating plasma clusters which attack odors and organic particles. Molecules of oxygen are released in the process, creating cleaner and fresher air. Also includes a programmable remote control.